Bob Yang's schedule is as follows:
8 am to 3 pm: School
3 pm to 12 am: Doing math and eating at the same time
12 am to 2 am: Doing science
2 am to 3 am: Homework
3 am to 4 am: Piano
4 am to 5 am: Watch TV and eat
5 am to 8 am: Sleep
How many percent, to the nearest percent, is Bob Yang doing math and eating at the same time?
*This schedule may (or may not) be fictitious.